Five altered inline six agent options were offered to customers. Four of these were variants of the 4.0 L Speed Six authoritative altered amounts of ability and torque, depending on the trim akin selected. The aftermost was a 3.6 L Speed Six which produced the aforementioned bulk of ability as the lowest-level 4.0 L engine, although hardly beneath torque.
* Bore and stroke: 96 mm by 92 mm (4.0 L) or 96 mm by 83 mm (3.6 L)* Power and torque:
o TVR Tuscan: 360 hp (268.5 kW), 310 ft.lbf (420.3 Nm)
o TVR Tuscan Red Rose: 380 hp (283.4 kW), 310 ft.lbf (420.3 Nm)
o TVR Tuscan S (pre-2003): 390 hp (290.8 kW), 310 ft.lbf (420.3 Nm)
o TVR Tuscan S (post-2003): 400 hp (298.3 kW), 315 ft.lbf (427.1 Nm)
o 3.6 L: 350 hp (261 kW), 290 ft.lbf (393.2 Nm)
